Shielded cannula guide and method

Abstract

A shielded intubation guide for use in an endotracheal intubation procedure, the shielded intubation guide comprising: an elongate body defining a channel for receiving a lens portion of an intubation device extending between a proximal opening and a distal opening, the shielded intubation guide configured for insertion into a mouth portion of a subject such that the proximal opening is positioned proximate the mouth portion and the distal opening is positioned in an airway of the subject; and a shield about the proximal opening for substantially reducing emissions from the mouth portion, the shielded intubation guide allowing an endotracheal intubation to be performed by inserting the lens portion of the intubation device into the channel, positioning a distal end of the lens portion proximate a larynx portion of the subject, and advancing an endotracheal tube along the lens portion through the channel into a trachea of the subject.

Description

Technical Field

[0001] The present invention relates to a shielded intubation guide and a method for use during endotracheal intubation, particularly suitable for allowing endotracheal intubation of a subject while substantially reducing excretion from the subject's mouth during the procedure. Background Technology

[0002] Endotracheal intubation is the procedure by which a medical professional inserts a flexible plastic tube (endotracheal tube) into the trachea, usually through the mouth. This allows for artificial ventilation when breathing is impaired in emergency situations due to illness or injury, or when it is interfered with during surgery due to drug-induced depression. It is a common procedure performed in the same way worldwide.

[0003] Thousands of intubations are performed daily by various professionals, particularly anesthesiologists, intensive care physicians, emergency room doctors, pre-hospital physicians, and nursing staff. However, endotracheal intubation is a high-risk procedure that can result in death or disability, requires considerable skill, and is sometimes impossible to perform. Even for highly trained professionals, it is often difficult and sometimes unsuccessful. New specialized instruments and advanced technologies are constantly being developed to facilitate this challenging procedure and ensure better success rates.

[0004] The operator's goal is to successfully pass the endotracheal tube through the mouth, pharynx, and larynx, and into the trachea. The oropharyngeal passage is tortuous and narrow, terminating at the entrance to the larynx and esophagus. When the patient is supine, the tongue tends to retract into the pharynx. Due to the patient's specific anatomy, the location of the laryngeal entrance may vary; the epiglottis is located above the laryngeal entrance and often needs to be moved to expose the glottic opening.

[0005] The operator needs to identify the vocal cords at the laryngeal inlet, the epiglottis above the laryngeal inlet in a cross-section with the patient supine, and the esophagus below all previously described structures in that cross-section. This procedure requires exceptional skill; the endotracheal tube is more likely to follow a path toward the esophagus, making it often difficult to obtain a good view of the laryngeal region, and even with a good view, insertion of the endotracheal tube can sometimes be challenging. Any delay in successfully completing this procedure is a serious complication and can potentially be fatal.

[0006] Inserting a tube through all these anatomical structures into the trachea is called endotracheal intubation, and it usually requires the use of an instrument called a laryngoscope, which consists of a handle and a blade. Different shapes of blades are used depending on a range of factors, such as the patient's age or size, and different procedural options. Laryngoscope blades are generally classified as curved or straight, although many curved and straight blades are available on the market. Some types of blades are designed to be positioned in front of the epiglottis, while others are designed to be positioned behind it, resulting in slightly different movements during the procedure. A light source can be placed at the end of the blade to illuminate areas beyond the endotracheal tube. The light source can be powered by batteries within the handle.

[0007] During endotracheal intubation, the patient is typically supine. The operator, standing at the top of the patient's head, inserts the laryngoscope blade through the mouth into the pharynx and manipulates anatomical structures such as the tongue and epiglottis (depending on the specific patient and blade type) to expose the entrance to the larynx. Then, under direct observation, the operator inserts the end of the endotracheal tube into the larynx and advances it into the trachea. In the routine procedure, the operator typically uses their left hand to hold the laryngoscope by the handle to position the blade and their right hand to carefully insert the endotracheal tube, pushing it along one side of the laryngoscope blade into the visible trachea.

[0008] Direct visualization is often difficult, despite sufficient technical skill, due to anatomical variations and challenges. In most cases, sufficient visualization can be achieved by manipulating certain anatomical structures. Unfortunately, in conventional laryngoscopy and procedures, the operator uses both hands, and the hands used for manually introducing endotracheal tubes cannot be used to manipulate anatomical structures to facilitate the procedure. Furthermore, a second operator cannot directly observe the entrance to the larynx to aid in manipulating these structures and will interfere with the first operator's vision, as the first operator's field of vision through the mouth opening is very limited, and the operator performing the intubation procedure is typically in the optimal observation position. Although video laryngoscopes are generally larger than conventional laryngoscopes and still occupy the operator's hands, they can be used to eliminate the need for direct visualization.

[0009] Due to the inherent difficulty of the procedure and the severity of potential complications, it can only be performed by highly skilled professionals. This difficulty and the risk of serious complications also mean that the procedure and the instruments used to perform it have remained largely unchanged for decades. Given the difficulty and risks, physicians and other professionals performing endotracheal intubation are reluctant to use new equipment or change their traditional methods. Therefore, new intubation devices need not only to offer significant operational advantages compared to conventional laryngoscopes, but also to be similar in shape, weight, and method of use to encourage adoption by operators who are already trained and comfortable using conventional laryngoscopes under the often high-pressure conditions during intubation.

[0010] WO / 2016 / 090435A1 discloses a novel intubation device that allows for single-handed endotracheal intubation. Specifically, the intubation device includes: a laryngoscope blade having an end and a base; a handle attached to the base of the blade for allowing the intubation device to be held by the user's hand; a channel for receiving an endotracheal tube, the channel including a blade channel portion and a handle channel portion, the blade channel portion extending substantially from the end to the base along the blade and including an outlet near the end for allowing advancement of the distal end of the endotracheal tube from the outlet, the handle channel portion extending partially along the handle from the blade channel portion; and a tube movement mechanism in the handle for moving the endotracheal tube through the channel to advance the endotracheal tube, the tube movement mechanism including a thumb interface for allowing the user to operate the tube movement mechanism using the thumb of the hand holding the intubation device, thereby allowing the user to hold the intubation device and advance the endotracheal tube with one hand during endotracheal intubation. The entire contents of WO / 2016 / 090435A1 are incorporated herein by reference.

[0011] By enabling the intubation device to be operated with one hand, positioning the lens via the handle and advancing the endotracheal tube, the user's other hand will remain free for other purposes, such as using another device (such as a suction device) to clean the airway, or manipulating anatomical structures and / or the endotracheal tube with other devices (such as forceps) during a procedure that may require endotracheal intubation.

[0012] During endotracheal intubation, discharge from the subject's mouth can be problematic. For example, liquids, droplets, or aerosols discharged from the subject's mouth during the procedure can expose the user of the intubation device or other nearby healthcare workers to infectious diseases. In particular, the risk of viral transmission through fluids, droplets, and / or aerosols emitted via the mouth has been a growing concern during the COVID-19 pandemic. The risk of contact with the user is especially high due to the close proximity of the user to the subject's mouth and the increased likelihood of the subject coughing or vomiting during the procedure.

[0013] Therefore, it is desirable to provide an apparatus and method that allows, ideally, endotracheal intubation of a subject using an intubation device similar to that routinely used by a physician, while substantially reducing excretions from the subject's mouth during the procedure.

[0014] To aid visualization, laryngoscopes and other intubation devices may include a light source near the tip of the blade to provide illumination during the procedure, thereby enhancing visibility of anatomical features near the larynx. This light source can be used for direct visualization using a conventional laryngoscope or for indirect visualization using a video laryngoscope, etc. When a light source is used to perform an endotracheal intubation procedure, it can be referred to as light-guided endotracheal intubation.

[0015] In most cases, light-guided endotracheal intubation is helpful, but it can be essential when intubation needs to be performed in darkness or poor lighting conditions. However, in some situations where light is not expected to escape from the subject's mouth, using light-guided endotracheal intubation can be problematic. For example, if a medic or nurse performs light-guided endotracheal intubation in darkness during combat, light escaping from the subject's mouth would create an open light source, revealing their position to the enemy and making them a target.

[0016] In cases where there is a problem with light escaping from the subject's mouth, it may be necessary to provide an apparatus and method to allow, ideally, light-guided endotracheal intubation of the subject using an intubation device similar to that routinely used by a physician, while substantially preventing light from escaping from the subject's mouth during the procedure.

[0017] Any references to prior publications (or information obtained from them) or any known matters in this specification are not and should not be construed as an admission or endorsement or any form of implication that prior publications (or information obtained from them) or known matters constitute part of the general common knowledge in the field covered by this specification. Summary of the Invention

[0018] In an extended form, the present invention aims to provide a shielded intubation guide for use during endotracheal intubation, the shielded intubation guide comprising: an elongated body defining a channel extending between a proximal opening and a distal opening, the channel being configured to receive a blade portion of an intubation device, wherein the shielded intubation guide is configured for insertion into the mouth of a subject such that the proximal opening is positioned close to the mouth of the subject and the distal opening is positioned in the airway of the subject; and a shield around the proximal opening, wherein the shield is configured to substantially reduce expulsion from the mouth of the subject, wherein the shielded intubation guide is configured to allow endotracheal intubation of the subject to be performed using an intubation device and the shielded intubation guide by: inserting the blade portion of the intubation device into the channel of the shielded intubation guide; positioning the distal end of the blade portion of the intubation device close to the larynx of the subject; and advancing an endotracheal tube along the blade portion of the intubation device through the channel into the trachea of ​​the subject.

[0019] In one embodiment, the shield is configured to substantially reduce one or more of the following discharges from the mouth of the object: fluid; droplets; aerosols; and light emitted from a light source at the distal end of the lens portion of the intubation device during a light-guided endotracheal intubation procedure.

[0020] In one embodiment, the shield is configured to substantially cover the mouth of the object during use.

[0021] In one embodiment, the shielding member includes a flange extending outward from the body, the flange being configured to substantially cover the mouth portion of the object in use.

[0022] In one embodiment, the flange surrounds the proximal opening.

[0023] In one embodiment, the flange includes opposing lateral flange portions that curve toward the distal opening.

[0024] In one embodiment, the flange includes an upper edge having a recess for aligning with the nose of the object during use.

[0025] In one embodiment, the flange is configured to prevent over-insertion of the shielded cannula guide by abutting against the mouth of the object, thereby ensuring that the proximal opening remains positioned outside the mouth.

[0026] In one embodiment, the proximal opening is at least one of the following: offset proximally from the flange; and oriented at an angle relative to the flange.

[0027] In one embodiment, the shielded cannula guide is configured to be broken along the channel and along a section of the shield.

[0028] In one embodiment, the body of the shielded cannula guide includes a break line extending along the side of the channel and longitudinally along the segment of the shield, thereby allowing the shielded cannula guide to break along the break line.

[0029] In one embodiment, the break line is defined along the central plane of the shielded cannula guide.

[0030] In one embodiment, the shielded cannula guide includes a cutting mark and is configured to be cut along the channel and along a segment of the shield by following the cutting mark.

[0031] In one embodiment, the shape of the proximal opening is selected based on the cross-sectional shape of the lens portion of the cannulation device.

[0032] In one embodiment, the size of the proximal opening is selected based on the cross-sectional dimensions of the lens portion of the cannulation device.

[0033] In one embodiment, the shape of the channel is selected based on the cross-sectional shape of the lens portion of the cannulation device.

[0034] In one embodiment, the size of the channel is selected based on the cross-sectional dimensions of the lens portion of the cannulation device.

[0035] In one embodiment, the shielded cannula guide is formed of a flexible material.

[0036] In one embodiment, the shielded cannula guide is configured to expand when receiving the lens portion.

[0037] In one embodiment, at least one wall of the body includes an expandable region.

[0038] In one embodiment, the expandable region is at least one of the following: extending at least partially longitudinally along the channel from the distal opening and allowing circumferential expansion of the body; and extending circumferentially around the body and allowing longitudinal expansion of the body.

[0039] In one embodiment, the body is curved.

[0040] In one embodiment, the curvature of the body is selected based on the curvature of the lens portion of the cannulation device.

[0041] In one embodiment, the shielded cannulation guide includes a seal covering the proximal opening, the seal being normally in a closed position for sealing the proximal opening and movable to an open position when the lens portion of the cannulation device is inserted through the channel.

[0042] In one embodiment, the seal is biased toward the closed position so that it returns toward the closed position when the lens portion of the cannulation device is removed from the channel.

[0043] In one embodiment, the seal is configured to form a partial seal around at least one of the lens portion of the intubation device and the endotracheal tube during use.

[0044] In one embodiment, the shielded cannulation guide includes a removable cap for closing the proximal opening when the lens portion of the cannulation device is not inserted into the channel of the shielded cannulation guide.

[0045] In one embodiment, the cap includes a seal for covering the proximal opening, the seal being normally in a closed position for sealing the proximal opening and movable to an open position when the lens portion of the cannulation device is inserted through the channel.

[0046] In one embodiment, the shielded cannula guide is configured to perform at least one of the following in use: retaining the object's tongue; and pressing down on the tongue.

[0047] In one embodiment, the shielded intubation guide is configured to allow ventilation of the subject using a ventilation mask and ventilator prior to endotracheal intubation.

[0048] In one embodiment, the shielded intubation guide is configured for use during light-guided endotracheal intubation, wherein after the lens portion of the intubation device is inserted into the channel of the shielded intubation guide, light is emitted from a light source near the distal end of the lens portion of the intubation device, wherein the shield is configured to substantially prevent light emitted from the light source from escaping from the subject's mouth.

[0049] In one embodiment, at least one of the following is provided: the light shield is formed of an opaque material; and the entire shielded cannula guide is formed of an opaque material.

[0050] In one embodiment, the shielded cannula guide is formed of a transparent material.

[0051] In one embodiment, the shield includes an edge configured to engage the face of the object, thereby forming a seal around the mouth of the object.

[0052] In one embodiment, the length of the body is selected such that the distal opening is positioned one of the following: near the oral cavity of the object; near the pharynx of the object; and between the tongue and palate of the object.

[0053] In one embodiment, the shielded cannula guide includes at least one additional opening that extends through the shield to facilitate access to the patient's oral cavity.

[0054] In one embodiment, the shielded cannula guide includes at least one suction port extending through the shield.

[0055] In one embodiment, the shielded cannulation guide includes at least one discharge conduit extending through the shield.

[0056] In other extensions, the present invention aims to provide a method for use during endotracheal intubation, the method comprising: inserting a shielded intubation guide into the mouth of a subject, the shielded intubation guide comprising: an elongated body defining a channel extending between a proximal opening and a distal opening configured to receive a lens portion of an intubation device, the proximal opening positioned close to the mouth of the subject, and the distal opening positioned in the airway of the subject; and a shield around the proximal opening for substantially reducing expulsions from the mouth of the subject; performing endotracheal intubation of the subject using an intubation device and the shielded intubation guide by: inserting the lens portion of the intubation device into the channel of the shielded intubation guide; positioning the distal end of the lens portion of the intubation device close to the larynx of the subject; and advancing an endotracheal tube along the lens portion of the intubation device through the channel into the trachea of ​​the subject, wherein the shield substantially reduces expulsions from the mouth of the subject during the endotracheal intubation procedure.

[0057] In one embodiment, the shield substantially reduces one or more of the following discharges from the mouth of the subject: fluid; droplets; aerosols; and light emitted from a light source at the distal end of the lens portion near the intubation device during a light-guided endotracheal intubation procedure.

[0058] In one embodiment, the method includes performing light-guided endotracheal intubation of the subject using an intubation device and the shielded intubation guide by: after inserting the lens portion of the intubation device into the channel of the intubation guide, emitting light from a light source near the distal end of the lens portion of the intubation device, wherein the shield substantially prevents light emitted from the light source from escaping from the subject's mouth during the light-guided endotracheal intubation procedure.

[0059] In one embodiment, the endotracheal intubation is performed as a non-visual intubation procedure.

[0060] In one embodiment, the intubation device includes a camera positioned close to the end of the lens, and the method includes: displaying an image captured by the camera on a display to a user; and the user performing the endotracheal intubation of the subject with reference to the image displayed on the display.

[0061] In one embodiment, the display is integrated with the cannulation device.

[0062] In one embodiment, the display is configured as goggles worn by the user.

[0063] In one embodiment, the display is surrounded by a display mask configured such that the user can view the display while substantially preventing light emitted from the display from escaping beyond the display mask and the user's face.

[0064] In one embodiment, when the shielded cannula guide is inserted into the mouth of the object, the shield substantially covers the mouth of the object.

[0065] In one embodiment, the shielding member includes a flange extending outward from the body, wherein the flange substantially covers the mouth of the object when the shielded cannula guide is inserted into the mouth of the object.

[0066] In one embodiment, the method includes, after advancing the endotracheal tube into the subject's trachea, and while leaving the endotracheal tube in place within the subject's trachea: withdrawing the lens portion of the intubation device from the shielded intubation guide; and removing the shielded intubation guide from the subject's mouth.

[0067] In one embodiment, the shielded intubation guide is configured to be broken along the channel and along a section of the shield, and the method includes breaking the shielded intubation guide to allow the shielded intubation guide to be removed while the endotracheal tube remains in place.

[0068] In one embodiment, the method includes cutting the shielded intubation guide along the channel and along a section of the shield to allow removal of the shielded intubation guide while the endotracheal tube remains in place.

[0069] In one embodiment, the method includes ventilating the subject using a ventilation mask and a ventilator prior to performing endotracheal intubation.

[0070] In one embodiment, the shielded cannulation guide includes a seal covering the proximal opening, the seal being normally in a closed position for sealing the proximal opening and movable to an open position when the lens portion of the cannulation device is inserted through the channel, the method comprising inserting the lens portion of the cannulation device through the seal into the channel of the shielded cannulation guide, wherein the seal substantially reduces discharge from the mouthpiece at least before the lens is inserted.

[0071] In one embodiment, the seal is biased toward the closed position so that it returns toward the closed position when the lens portion of the intubation device is removed from the channel, and the seal forms a partial seal around the lens portion of the intubation device and at least one of the endotracheal tubes after the lens is inserted.

[0072] In one embodiment, the shielded cannula guide includes a removable cap for sealing the proximal opening, the method comprising: inserting the shielded cannula guide into the mouth of an object with the cap sealing the proximal opening, thereby substantially reducing discharge from the mouth of the object through the proximal opening while the cap is in place; and removing the cap before inserting the lens portion of the cannula device into the channel of the shielded cannula guide.

[0073] In one embodiment, the shielded intubation guide includes at least one suction port extending through the shield, and the method includes performing suction of fluid from the patient's oral cavity via the suction port.

[0074] In one embodiment, the shielded cannulation guide includes at least one discharge conduit extending through the shield, and the method includes allowing fluid to be discharged from the patient's oral cavity via the discharge conduit.

[0075] In other extensions, the present invention aims to provide a light-shielded intubation guide for use during endotracheal intubation, the light-shielded intubation guide comprising: an elongated body defining a channel extending between a proximal opening and a distal opening, the channel being configured to receive a lens portion of an intubation device; and a light shield near the proximal opening, wherein the light-shielded intubation guide is configured for insertion into the mouth of a subject, such that the proximal opening is positioned close to the mouth of the subject and the distal opening is positioned close to the pharynx of the subject, thereby allowing the use of an intubation device to… The light-shielded intubation guide performs light-guided endotracheal intubation on the subject by: inserting the lens portion of the intubation device into the channel of the light-shielded intubation guide; emitting light from a light source near the distal end of the lens portion of the intubation device, wherein the light shield is configured to substantially prevent light emitted from the light source from escaping from the subject's mouth; positioning the distal end of the lens portion of the intubation device close to the subject's throat; and advancing the endotracheal tube along the lens portion of the intubation device through the channel into the subject's trachea.

[0076] In other extensions, the present invention aims to provide a method for use during endotracheal intubation, the method comprising: inserting a light-shielded intubation guide into the mouth of a subject, the light-shielded intubation guide comprising: an elongated body defining a channel extending between a proximal opening and a distal opening, the channel being configured to receive a lens portion of an intubation device, the proximal opening being positioned close to the mouth of the subject and the distal opening being positioned close to the pharynx of the subject; and a light shield near the proximal opening, the light shield serving to substantially prevent light from escaping from the mouth of the subject; Using the intubation device and the light-shielded intubation guide, a light-guided endotracheal intubation of the subject is performed by: inserting the lens portion of the intubation device into the channel of the light-shielded intubation guide; emitting light from a light source near the distal end of the lens portion of the intubation device, wherein the light shield substantially prevents light emitted from the light source from escaping from the subject's mouth; positioning the distal end of the lens portion of the intubation device close to the subject's larynx; and advancing the endotracheal tube along the lens portion of the intubation device through the channel into the subject's trachea.

[0077] It should be understood that the generalized forms of the invention and their respective features can be used in combination, interchangeably, and / or independently, and references to individual generalized forms are not intended to be limiting. Attached Figure Description

[0078] Various examples and embodiments of the invention will now be described with reference to the accompanying drawings, in which:

[0079] Figures 1A to 1H This is a cross-sectional view showing the steps of an endotracheal intubation procedure performed on an object using a first example of a shielded intubation guide;

[0080] Figure 2A and Figure 2B yes Figures 1A to 1H A perspective view of the first example of a shielded cannula guide;

[0081] Figure 2C yes Figure 2A and Figure 2B Side view of the shielded cannula guide;

[0082] Figure 2D yes Figures 2A to 2C Cross-sectional view of the shielded cannula guide;

[0083] Figure 3A yes Figures 2A to 2D A perspective view of a shielded intubation guide, showing the lens portion of the intubation device inserted into the channel of the shielded intubation guide;

[0084] Figure 3B yes Figure 3A A cross-sectional view of the shielded cannula guide and the lens portion of the inserted cannula device;

[0085] Figure 4A and Figure 4B This is a cross-sectional view showing the steps of a second example of removing the shielded intubation guide after an endotracheal intubation procedure has been performed;

[0086] Figure 5A yes Figure 4A and Figure 4B A bottom view of a second example of a shielded intubation guide, showing the endotracheal tube being advanced through the channel of the shielded intubation guide;

[0087] Figure 5B yes Figure 5A A bottom view of the shielded intubation guide and the endotracheal tube, wherein the shielded intubation guide is broken to remove the endotracheal tube.

[0088] Figure 6 This is a perspective view of a third example of a shielded cannula guide, which has a membrane seal for sealing the proximal opening;

[0089] Figure 7A This is a perspective view of a fourth example of a shielded cannula guide, which has a removable cap in the open position;

[0090] Figure 7Band Figure 7C yes Figure 7A A 3D view of a shielded cannula guide with the cover in the closed position;

[0091] Figure 7D yes Figure 7A A top view of the shielded cannula guide, with the cover in the closed position;

[0092] Figure 7E yes Figure 7A A side view of the shielded cannula guide with the cover in the closed position;

[0093] Figure 7F yes Figure 7A A cross-sectional view of the shielded cannula guide, with the cover in the closed position;

[0094] Figure 7G yes Figure 7A A cross-sectional view of the shielded cannula guide, with the cover in the open position;

[0095] Figure 8 and Figure 9 These are perspective views of the corresponding fifth and sixth examples of shielded cannula guides, showing an optional configuration of an expandable region extending from the distal opening;

[0096] Figure 10 This is a seventh example of a shielded cannula guide and a perspective view of a freestanding removable cap-seal section;

[0097] Figures 11A to 11C This is a perspective view of the eighth example of a shielded cannula guide;

[0098] Figure 12 This is a perspective view of the ninth example of a shielded cannula guide, showing an example of a short-body construction;

[0099] Figure 13 This is a perspective view of the tenth example of a shielded cannula guide, showing an example of a longitudinally extendable body; and

[0100] Figure 14A and Figure 14B This is a cross-sectional view showing the steps of manually advancing an intratracheal tube using a first example of a conventional laryngoscope with a shielded intubation guide. Detailed Implementation

[0101] Now refer to Figures 1A to 1H as well as Figures 2A to 2D This describes an example of a shielded intubation guide used during endotracheal intubation of subject 100. Figures 1A to 1H The shielded cannulation guide 110 used in different steps of the process is shown. Figures 2A to 2DFurther details of the shielded cannula guide 110 are shown.

[0102] The shielded intubation guide 110 is particularly suitable for allowing the use of lens-type intubation devices 140, such as laryngoscopes (e.g. Figures 1C to 1F (As shown) endotracheal intubation is performed. For the purposes of the following examples, it is assumed that the intubation device 140 is a one-handed intubation device, as described in WO / 2016 / 090435A1; however, it should be understood that other forms of intubation devices appropriately adapted to the shielded intubation guide 110 may be used. For example, embodiments of the shielded intubation guide 110 may be configured for use with an available video laryngoscope or a conventional direct-view laryngoscope.

[0103] In a broad sense, regarding Figure 1A The shielded cannula guide 110 includes an elongated body 111 defining a channel 112 extending between a proximal opening 113 and a distal opening 114. The channel 112 of the shielded cannula guide 110 is configured to receive a lens portion 142 of the cannula device 140, such as... Figures 1D to 1F As shown, further details can be found in [link / reference]. Figure 3A and Figure 3B The shielded cannulation guide 110 also includes a shield 120 positioned near the proximal opening 113.

[0104] The shielded cannula guide 110 is specifically configured as a mouthpiece 102 for inserting the object 100, such as... Figure 1B As shown, the proximal opening 113 is positioned close to the mouth 102 of the object 100 and the distal opening 114 is positioned in the airway of the object.

[0105] Different embodiments of the shielded cannulation guide 110 can be configured to position the distal opening 114 in different anatomical regions of the subject. For example, the length of the body 111 of the shielded cannulation guide 110 can be selected such that the distal opening 114 is positioned close to the subject's oral cavity or close to the subject's pharynx. In some examples, the distal opening 114 may be positioned between the subject's tongue and palate, while in other examples, the distal opening 114 may be positioned behind the tongue in the subject's oropharynx.

[0106] The shield 120 is positioned around the proximal opening 113, close to the mouth 102 of the object 100. The shield 120 is configured to substantially reduce discharge from the mouth 102 of the object 100. Further details of the shield 120 can be found in... Figures 2A to 2D And they will be described as appropriate. Typically, the shield 120 is configured to substantially cover the mouth of the object in use, and may include a flange extending outward from the body 111, which substantially covers the mouth 102 of the object 100 in use.

[0107] By inserting the shielded intubation guide 110 into the mouth 102 of the subject 100, endotracheal intubation of the subject 100 can be performed using the intubation device 140 and the shielded intubation guide 110. Further reference will be made. Figures 1A to 1H A detailed example of the method of using the shielded intubation guide 110 during endotracheal intubation is described as appropriate. However, in the description of the construction of the shielded intubation guide 110, the endotracheal intubation procedure is performed using the shielded intubation guide 110 by inserting the lens portion 142 of the intubation device 140 into the channel 112 of the shielded intubation guide 110 (e.g., Figure 1D (As shown); the distal end 143 of the lens portion 142 of the intubation device 140 is positioned close to the throat 104 of the subject 100 (also as shown). Figure 1D (as shown); and the tracheal tube 150 is advanced along the lens section 142 of the intubation device 140 through the channel 112 into the trachea 105 of the subject (as shown). Figure 1F (As shown).

[0108] In any case, it should be understood that the shielded intubation guide 110 can be used to substantially reduce expulsions from the subject's mouth during use (before and during the procedure). For example, the shield 120 can be configured to substantially reduce fluid, droplets, and / or aerosols from the subject's mouth 102, thus limiting the exposure of the user of the intubation device 140 or other medical personnel near the subject to infectious diseases that could be transmitted from the subject via these expulsions from the subject's mouth. Alternatively or additionally, in scenarios where light escaping from the subject's mouth may be undesirable, the shield 120 can be configured to substantially reduce expulsions from the subject's mouth 102 during light-guided endotracheal intubation procedures, i.e., light emitted from a light source at the distal end of the lens portion near the intubation device.

[0109] Now refer to Figures 1A to 1H A further detailed description of an example of a method using the shielded intubation guide 110 as described above for use during endotracheal intubation.

[0110] refer to Figure 1A The procedure begins with the subject 100 lying supine, similar to a conventional endotracheal intubation procedure. The subject's head 101 may be tilted to adjust the relative positions of the subject's mouth 102, pharynx 103, and larynx 104 for better access to the larynx during the procedure.

[0111] exist Figure 1A In this configuration, the shielded cannula guide 110 is configured as the mouth 102 for inserting the object 100.

[0112] The shielded cannula guide 110 is then inserted into the mouth 102 of the object 100, such as... Figure 1B As shown. When the shielded intubation guide 110 has been properly inserted, the proximal opening 113 will be positioned close to the mouth 102 of the subject 100, and the distal opening 114 will be positioned in the airway of the subject 100. In this example, the distal opening 114 is positioned close to the pharynx 103, but as mentioned above, the position of the distal opening 114 will depend on the length of the body 111. In other examples, the distal opening 114 may be positioned in the oral cavity, for example, between the tongue 106 and the palate of the subject 100. The shield 120 positioned around the proximal opening 113 will also be positioned close to the mouth 102 of the subject 100 to substantially reduce expulsions from the subject's mouth.

[0113] Typically, both the proximal opening 113 and the shield 120 will be located outside the mouth portion 102 of the object 100, such that the shield 120 substantially covers the mouth portion 102. However, this is not mandatory, and it should be understood that alternative designs may include one or both of the shield 120 and the proximal opening 113 being at least partially inside the mouth portion 102. However, in this embodiment, the shield 120 includes a flange surrounding the body 111 and covering the outside of the mouth portion 102, and the body 111 includes a protrusion 116 that projects proximally from the shield 120 so that the proximal opening 113 is located outside the mouth portion 102.

[0114] Transfer to Figure 1C Once the shielded intubation guide 110 has been inserted, the intubation device 140 will be set up to perform endotracheal intubation on the subject 100.

[0115] As described above, in this example, the intubation device 140 is a one-handed intubation device and includes a handle portion 141 connected to a lens portion 142 for allowing the user to hold the intubation device 140 and move the lens portion 142 and the distal end 143 relative to the patient's anatomy. This type of intubation device 140 includes a channel for receiving an endotracheal tube 150, and a tube movement mechanism in the handle portion 141 for moving the endotracheal tube 150 through the channel to advance the endotracheal tube 150. In this case, the tube movement mechanism includes a thumb interface 144 for allowing the user to operate the tube movement mechanism using the thumb of the hand holding the intubation device, thereby allowing the user to hold the intubation device 140 and advance the endotracheal tube 150 with one hand during endotracheal intubation.

[0116] The intubation device 140 will typically include a light source (not shown) positioned near the distal end of the lens portion 142 for providing illumination during the endotracheal intubation procedure, which in this case may be referred to as light-guided endotracheal intubation. It will be noted that in practice, most endotracheal intubation procedures will typically be performed as light-guided endotracheal intubation procedures, therefore these terms will be used interchangeably here.

[0117] As described above, embodiments of the shielded intubation guide 110 can be configured to substantially reduce light emission from the patient's mouth during a light-guided endotracheal intubation procedure. In this case, the shield 120 of the shielded intubation guide 110 will typically function as a light shield, which can be used to substantially prevent light emitted from the light source from escaping from the patient's mouth during the light-guided endotracheal intubation procedure. Further details of this scenario will be described in due course.

[0118] It should be understood that the functionality of this light shield may only be required in specific scenarios where light escaping from the mouth would be undesirable, such as in dark conditions in military applications where light escaping from an object's mouth would create an open light source, exposing their position to the enemy and making them a target. However, in many other scenarios, light escaping will not be problematic, and the shielded intubation guide 110 will not need this light shield functionality. In any case, it is generally expected that the shield will substantially reduce other expulsions from the object's mouth, regardless of whether light-guided endotracheal intubation is performed and regardless of whether a light shield is required.

[0119] The intubation device 140 can be configured to allow light-guided endotracheal intubation as a non-visual intubation procedure, that is, when the lens portion 142 of the intubation device 140 is inserted, the user can perform the procedure without direct visual visualization of the larynx 104 and surrounding anatomical structures of the subject 100.

[0120] In some examples, the cannulation device 140 may also include a fiber optic viewing device (not shown) to allow the user to observe the patient's internal anatomy without direct observation. The fiber optic viewing device may include a flexible fiber bundle having a lens positioned at one end near the distal end 143 of the lens portion 142 and an eyepiece positioned at the other end. The fiber bundle may travel along the lens portion 142 and enter the handle portion 141. The eyepiece may be located on the handle portion 141 or on a protrusion suitably formed from the handle portion 141 to allow the user to view the eyepiece during the procedure.

[0121] In other examples, the intubation device 140 may include a camera (not shown) positioned near the distal end 143 of the lens portion 142 to provide video images of the patient's internal anatomy during the procedure. It should be understood that this provides even more flexible viewing options compared to the fiber optic viewing devices described above.

[0122] The camera can be connected to a display (not shown) for presenting images from the camera in real-time or near real-time during the procedure. A small display can be integrated with the intubation device 140, while a freestanding large display for displaying magnified images of internal anatomical structures is preferably provided in a location more convenient for user observation. Connection to the display can be achieved via a cable extending from the intubation device 140 or via a wireless communication connection, which avoids cable interference with user movement. In some examples, the display can be configured as a pair of goggles worn by the user. It should be understood that this will conveniently allow the user to observe images presented by the camera, independent of the user's body and head position. Depending on the implementation, the display may occupy the entire viewing area of ​​the goggles or only a portion thereof.

[0123] In any of the above-described options for providing a display, the display may be surrounded by a display mask (not shown), which may be configured to allow the user to view the display while substantially preventing light emitted from the display from escaping beyond the display mask and the user's face. For example, in the above example where the display is integrated with the cannulation device 140, the display mask may be in the form of an extension mask surrounding the display, which wraps around the user's eyes and conforms to the user's face to substantially prevent light escape. In the case where the display is configured as goggles worn by the user, the goggles may include a surrounding mask in the form of a skirt made of an opaque, preferably flexible material, which conforms to the user's face around the user's eyes to substantially prevent light escape.

[0124] In any case, regarding Figure 1D Endotracheal intubation begins with inserting the lens portion 142 of the intubation device 140 through the proximal opening 113 into the channel 112 of the shielded intubation guide 110. The lens portion 142 of the intubation device 140 passes through the channel 112 of the shielded intubation guide 110 to position the distal end 143 of the lens portion 142 close to the larynx 104 of the patient 100. Typically, the distal end 143 will protrude through the distal opening 114, as can be seen in… Figure 3A and Figure 3B of, Figure 3A and Figure 3B A detailed view is provided showing the positioning of the lens portion 142 of the cannulation device 140 relative to the shielded cannulation guide 110.

[0125] During the insertion of the lens portion 142 of the intubation device 140 into the channel 112 of the shielded intubation guide 110, light-guided endotracheal intubation is typically initiated by activating the light source of the intubation device 140.

[0126] The following discussion will describe the steps involved in performing a light-guided endotracheal intubation procedure to further explain how the shielded intubation guide 110 can be used to provide a light shield, thereby substantially preventing light emitted from the light source from escaping the subject's mouth during the light-guided endotracheal intubation procedure.

[0127] It should be understood that when endotracheal intubation is typically light-guided, light escaping from the subject's mouth may not be considered problematic in many practical scenarios. In many cases, protection from fluids, droplets, and aerosols will be a greater concern. Therefore, it should be understood that embodiments of the shielded intubation guide 110 may only require the light shield functionality for specific scenarios, while it is expected that embodiments of the shielded intubation guide 110 will typically be used to reduce other expulsions from the subject's mouth 102, such as fluids, droplets, and aerosols, in most practical scenarios.

[0128] Preferably, the light source is activated only after the distal end 143 of the lens portion 142 (and thus the light source, which is typically located near it when disposed on the cannulation device 140) is initially inserted into the channel 112, such that light is emitted only from the light source inside the channel 112 to guide the insertion of the distal end 143 through the channel into the desired position relative to the anatomical structure of the object.

[0129] The specific positioning of the distal end 143 will depend on the particular construction of the lens, but typically the distal end 143 will be positioned around the epiglottis 107 and moved as needed to expose the subject's glottis. The distal end 143 may engage the valley inside the subject's trachea 105. As the lens portion 142 is moved, this can cause some movement of the shielded intubation guide 110 relative to the subject's mouth 102 and tongue 106.

[0130] Figure 1E The area inside the patient's airway is indicated by a dashed line. This area can be illuminated by the light source if activated, especially during insertion of the lens section 142 and when the distal end 143 is in proper position. Note that different areas may be illuminated depending on the specific construction of the intubation device 140 and the specific location of the light source. In any case, the light source will generally be configured to illuminate the larynx 104 and surrounding anatomical structures, such as the epiglottis 107, allowing the user to move the distal end 143 relative to these anatomical structures under light guidance.

[0131] Typically, there will also be some illumination extending beyond these target areas, which may include some light being emitted back above the pharynx 103 and toward the mouth 102, such as... Figure 1E As indicated in the instructions. However, it should be understood that the shield 120 of the shielded cannula guide 110 can substantially prevent light from escaping from the mouth 102 of the object 100 by blocking light emitted toward the mouth 102. It will be understood that if the functionality of the photomask is desired, the shield 120 should be formed of an opaque material, thus substantially preventing light from propagating through the shield 120 itself.

[0132] As described above, preferably, the shield 120 substantially covers the mouth 102 of the object 100. In an example where the shield 120 includes a flange extending outward from the body 111, the flange will substantially cover the mouth 102 of the object 100. It will be understood that by utilizing a suitably configured shield 120 that provides sufficient coverage of the mouth 102, light escape from the mouth can be effectively prevented during light-guided endotracheal intubation procedures.

[0133] Some light may escape through channel 112, but it should be understood that any light emitted toward channel 112 will be substantially blocked by the lens portion 142 inside channel 112. Moreover, as discussed in further detail below, the body 111 and the channel 112 defined therein will generally be curved, and this curvature of the body 111 can also help prevent light from emanating directly along channel 112.

[0134] In addition, in some embodiments, the shielded intubation guide 110 may include a seal for covering the proximal opening 113, which helps prevent light from escaping through the channel 112 and leaving the proximal opening 113 during the light-guided endotracheal intubation procedure. Figure 6 An example of a shielded cannulation guide 610 is shown, which includes a seal 601 covering a proximal opening 113. The seal 601 can be configured to be in a closed position for sealing the proximal opening and to be movable to an open position when the lens portion 142 of the cannulation device 140 is inserted through the channel 112. Thus, the lens portion 142 can be inserted through the seal 601 at the proximal opening 113, while the seal helps to block light emitted from a light source at the distal end 143 of the lens portion 142.

[0135] It will be understood that the aforementioned seal can also be used to reduce other excretions from the mouth or airway of the subject via passage 112 before or during the process within the trachea: fluids, droplets and / or aerosols.

[0136] Now let's go back to... Figure 1FOnce the distal end 143 has been moved into position, the endotracheal tube 150 is advanced along the lens portion 142 of the intubation device 140 through the channel 112 of the shielded intubation guide 110 to introduce the end 151 of the endotracheal tube into the patient's trachea 105. It should be understood that using the one-handed intubation device 140 allows the user to advance the endotracheal tube 150 by operating the thumb interface 144 using the thumb of the same hand holding the device. However, if a different form of intubation device is used that is not conducive to one-handed intubation, the endotracheal tube 150 may be advanced manually in the conventional manner.

[0137] In any case, the endotracheal intubation procedure, including inserting the intubation device 140 and advancing the endotracheal tube 150 into the trachea 105, can be performed under the guidance of light emitted from a light source, while the shield 120 substantially prevents light from escaping from the mouth 102 of the subject 100. Accordingly, in this method, the shielded intubation guide 110 can be used to allow the performance of light-guided endotracheal intubation without the problem of light escaping.

[0138] For example, this method enables the performance of light-guided endotracheal intubation in dark conditions during combat scenarios without the risk of light escaping from the subject's mouth or exposing the medic or nurse performing the procedure to enemy fire. It should be understood that this expands the options available to medics or nurses for emergency intubation in combat scenarios and similar situations.

[0139] However, as described above, the shielded cannula guide 110 can be advantageously used to reduce discharge from the mouth of the object in all scenarios, regardless of whether the mask functionality is required, for example, this can help prevent the spread of infectious diseases from the object to the user or other medical personnel via droplets or aerosols discharged from the mouth of the object.

[0140] The endotracheal tube 150 will typically be a standard type of endotracheal tube and may include an inflatable sleeve (not shown) that can be inflated once the endotracheal tube 150 has been advanced to the desired position. It should be understood that the inflatable inflatable sleeve can help secure the endotracheal tube 150 in the proper position within the endotracheal tube 105 of the object.

[0141] After the endotracheal tube 150 has been advanced into the trachea 105 of the subject 100 (and if the cuff on the endotracheal tube 150 is inflated), the light source can be deactivated (if it is used as part of a light-guided endotracheal intubation procedure), and the intubation device 140 can be removed, leaving the endotracheal tube 150 in place within the trachea 105, such as... Figure 1G As shown. This can be maintained in the tracheal tube 150 as... Figure 1GWhen the device is in the appropriate position as shown, this is performed by withdrawing the lens portion 142 of the cannulation device 140 from the shielded cannulation guide 110. During this stage, the shielded cannulation guide 110 will remain in the appropriate position.

[0142] The endotracheal tube 150 can then be connected to a ventilation source and used to provide ventilation to the object 100. Typically, this would involve connecting a ventilation source (not shown) to a connector 152 at the proximal end of the endotracheal tube 150, such that ventilation is provided via the endotracheal tube 150.

[0143] It should be understood that any suitable type of ventilation source can be used for ventilation of the object 100. For example, a manual bag valve type ventilator can be used, connected to connector 152 of the endotracheal tubing 150 using a suitably configured ventilator connector. The ventilator connector will typically be a standard / universal connector type. The ventilator will generally be located outside the object's mouth. Alternatively, for example, the ventilation source can be in the form of a powered mechanical ventilator. In some embodiments, a more distant ventilator unit can be connected to connector 152 of the endotracheal tubing 150 via a flexible tube of a certain length, etc.

[0144] Once ventilation has been established via the endotracheal tube 150, the shielded intubation guide 110 can be removed from the mouth 102 of the subject 100, such as Figure 1H As shown, the endotracheal tube 150 is left in place for continuous ventilation.

[0145] In some embodiments, the shielded cannula guide 110 may be configured such that sections along the channel 112 and along the shield 120 are to be broken to allow for its removal. Figure 4A and Figure 4B A second example of a broken shielded cannula guide 410 is shown, along with optional steps for its removal.

[0146] For example, the example shielded cannula guide 410 may include a break line 117 in the body 111 and in a section of the shield 120, the break line 117 typically extending between the channel 112 and the edge of the flange providing the shield 120. When using such a shielded cannula guide 410, methods may include breaking the shielded cannula guide 410, such as... Figure 4A This allows for the removal of the shielded intubation guide 110 while the endotracheal tube 150 remains in place, such as... Figure 4B As shown.

[0147] Figure 5A and Figure 5BDetailed views of the shielded intubation guide 410 before and after breakage are shown, with the endotracheal tube 150 extending through the channel 112, thus demonstrating how this would allow the removal of the shielded intubation guide 110 while leaving the endotracheal tube 150 in its deployment position.

[0148] It should be understood that this method of breaking the shielded intubation guide 110 avoids the need to pass the shielded intubation guide 110 through the connector 152 fitted to the proximal end of the endotracheal tube 150, and avoids the need to disconnect the proximal end of the endotracheal tube 150 from the ventilator, which would otherwise undesirably interfere with ventilation of the subject using the endotracheal tube 150. It also avoids unintentional displacement of the endotracheal tube 150 from its delivery position and potential loss of a safe airway during removal of the shielded intubation guide 110.

[0149] In an alternative example, the shielded cannula guide 110 may include cutting marks (not shown) and is configured to be cut along the channel 112 and along sections of the shield 120 by following the cutting marks. It should be understood that this would facilitate similar functionality to that described above for facilitating the removal of the shielded cannula guide 110 without providing a breakable portion in the construction of the shielded cannula guide 110, but would require additional use of cutting tools.

[0150] The shielded intubation guide 110 can be designed such that the channel 112 fits into the lens portion 142 of the intubation device 140 without requiring a configuration to allow tube fitting. This helps reduce the escape of light emitted from the light source through the channel 112 around the lens portion 142 during light-guided endotracheal intubation procedures. Similarly, this helps reduce other exudates, such as fluids, droplets, and / or aerosols, through the channel 112 during any form of endotracheal intubation procedure (light-guided or otherwise).

[0151] In some examples of the above methods, the shielded cannulation guide 110 can be as follows: Figure 1B The mouth 102 of the subject 100 is shown for insertion, and the subject 100 can be ventilated using a ventilation mask and ventilator while the shielded intubation guide 110 is in place prior to endotracheal intubation. Accordingly, it should be understood that the shielded intubation guide 110 will preferably be configured to allow this to occur, such as by being designed to fit under a standard ventilation mask.

[0152] It should be understood that any suitable type of ventilator can be used to ventilate a subject using a face mask, as discussed above for ventilation using an endotracheal tube. Typically, the ventilator will be a manual bag valve type face mask ventilator connected to a face mask, but the ventilator can alternatively take the form of, for example, a powered mechanical ventilator.

[0153] The procedure for ventilating a subject using a ventilation mask may include oxygenating the subject using the mask, for example, by supplying oxygen from an oxygen source to the ventilation port. In some cases, 100% oxygen may be supplied, or air may be supplied at a lower oxygen percentage. However, it should be understood that oxygenation is not necessary, and ventilation can be provided using the atmosphere without adding oxygen. This may depend on the availability of a separate pressurized oxygen source, which may not be the case in some cases.

[0154] In any case, if ventilation is performed after insertion of the shielded intubation guide 110, this can continue indefinitely until the user decides to proceed with endotracheal intubation. For example, the user may wish to continue ventilation until the desired oxygen saturation level is achieved before intubating the subject. Alternatively, the shielded intubation guide 110 can be inserted by another user, and the subject can be ventilated while awaiting an intubation specialist to perform endotracheal intubation.

[0155] It should be understood that the above-described method provides a new technique for allowing endotracheal intubation to be performed on a subject using a shielded intubation guide 110, wherein the shield 120 substantially reduces expulsion from the subject's mouth during use. In the aspects of the method described above, it should be understood that the special design of the shielded intubation guide 110 enables the performance of the endotracheal intubation procedure, which will now be discussed regarding... Figures 2A to 2D Further detailed description.

[0156] As described above, the shielded intubation guide 110 includes an elongated body 111 that defines a channel 112 extending between a proximal opening 113 and a distal opening 114. The channel 112 is configured to receive the lens portion 142 of the intubation device 140. The shielded intubation guide 110 also includes a shield 120 located at the distal opening 114. As described above, the shield 120 is used to substantially reduce expulsion from the patient's mouth during use.

[0157] As previously mentioned, the shielded intubation guide 110 is configured for insertion into the mouth 102 of the subject 100, such that the proximal opening 113 is positioned close to the mouth 102 of the subject and the distal opening is positioned close to the pharynx 103 of the subject, thereby allowing endotracheal intubation to be performed on the subject using the intubation device 140 and the shielded intubation guide 110.

[0158] As described above, the endotracheal intubation procedure typically involves inserting the lens portion 142 of the intubation device 140 into the channel 112 of the shielded intubation guide 110; positioning the distal end 143 of the lens portion 142 of the intubation device 140 close to the larynx 104 of the patient 100; and advancing the endotracheal tube 150 along the lens portion 142 of the intubation device 140 through the channel 112 into the trachea 105 of the patient 100.

[0159] Now about Figures 2A to 2D Other optional / preferred features of the shielded cannulation guide 110 are discussed.

[0160] As previously described, the shield 120 is typically configured to substantially cover the mouth 102 of the object 100 in use. In this example, the shield 120 includes a flange extending outward from the body, such as Figures 2A to 2D As shown, the flange is configured to substantially cover the mouth 102 of the object 100 in use. Typically, the flange surrounds the proximal opening 113.

[0161] In this example, the flange of the shield 120 has a generally rectangular shape, including an upper edge 221, a lower edge 222, and lateral edges 223, 224. In this case, the flange includes opposing lateral flange portions that curve toward the distal opening 114. In other words, the lateral flange portions are curved such that they at least partially surround the face of the subject 100. This curved flange arrangement helps to block any light emitted toward the subject's mouth 102 during a light-guided endotracheal intubation procedure. This also helps to reduce other excretions from the subject's mouth 102, through which fluids, droplets, aerosols, etc., can be transmitted, by minimizing the gap between the flange of the shield 120 and the face of the subject 100.

[0162] In this embodiment, the flange of the shield 120 includes an upper edge 221 having a recess 225 for alignment with the nose of the subject 100 in use. However, alternative embodiments of the shielded cannula guide 110 may include a shield 120 with a different construction while still providing the ability to substantially reduce discharge from the subject's mouth 102.

[0163] The flange can also be configured to provide additional functionality: assisting in the proper insertion of the shielded cannula guide 110. In particular, the flange can help prevent over-insertion of the shielded cannula guide 110 by abutting against the mouth 102 of the object, thereby ensuring that the proximal opening 113 remains positioned outside the mouth 102.

[0164] In some embodiments, the shielded cannula guide 110 may include a strap or other suitable device for securing the shielded cannula guide 110 in place relative to the mouth 102 of the subject after insertion. For example, the strap may be attached to lateral edges 223, 224, or the strap may include loops for wrapping around the subject's ears, or the strap may extend around the back of the subject's head. It should be understood that any device used to secure the shielded cannula guide 110 to the subject can be used, in a manner similar to that used to secure an oxygen mask or other devices worn on the subject's face.

[0165] The proximal opening 113 may be offset proximally from the flange and / or oriented at an angle relative to the flange. Regarding Figures 2A to 2D As will be seen, the proximal opening 113 is located at one end of the protrusion 116 that projects proximally from the shield 120, such that the proximal opening 113 is located outside the mouth portion 102. In this case, the proximal opening 113 is both offset and oriented at an angle relative to the flange. In particular, the upper proximal opening edge 211 is offset further from the flange than the lower proximal opening edge 212.

[0166] In this configuration, the upper proximal opening edge 211 is substantially straight and extends to the substantially flat side of the body 111, which terminates at the substantially straight upper distal opening edge 213. Conversely, the lower proximal opening edge 212 is curved and extends to the substantially flat side of the body 111, which terminates at the curved lower distal opening edge 214. It should be understood that the shapes of these edges and the corresponding sides of the body 111 will generally be selected based on the shape of the lens portion 142 of the cannulation device 140, as discussed in further detail below.

[0167] As described above, in some examples, the shielded intubation guide 110 can be configured to allow ventilation of the subject 100 using a ventilation mask and ventilator after its insertion and before performing guided endotracheal intubation. For this purpose, the shielded intubation guide 110 can be designed to fit under a standard ventilation mask, or otherwise allow the ventilation mask to be used in conjunction with the inserted shielded intubation guide 110.

[0168] The elongated body 111 of the shielded cannula guide 110 can be curved, such as... Figures 2A to 2DThe example is illustrated. This curved configuration can be configured to allow the shielded intubation guide 110 to better conform to the mouth 102 and airway anatomy of the patient 100 during use. Furthermore, as mentioned above, the curvature can also help prevent light from emanating through the channel 112 surrounding the lens portion 142 of the intubation device 140 during light-guided endotracheal intubation procedures. The shielded intubation guide 110 is not necessarily curved, but it should be understood that, whether or not it is curved, the amount of curvature will depend to some extent on the lens type of the intubation device 140.

[0169] Depending on the need, the shielded intubation guide 110 can be formed from different materials with varying degrees of flexibility. For example, embodiments of the shielded intubation guide 110 can be formed from relatively flexible materials so that the shielded intubation guide 110 can allow at least partial deformation during use to conform to the natural curvature of the mouth 102 and the airway anatomy.

[0170] On the other hand, embodiments of the shielded cannula guide 110 can be formed of a relatively non-flexible material, wherein the curvature of the body 111 will need to be selected to conform to the anatomy of the object, rather than depending on the basic deformation of the cannula guide 110.

[0171] Using a flexible material to form the shield 120 can also help allow the shield 120 to conform to the face of the object around the mouth 102, although this is not necessary and a more rigid material can also be used.

[0172] The shielded intubation guide 110 will typically be formed of a suitable medical-grade plastic material. In embodiments designed to provide the photomask functionality described above, at least the shield 120 should be formed of an opaque material to ensure that light does not propagate through the photomask 120 or escape from the mouth 102 of the subject 100 during the photoguided endotracheal intubation procedure. In a preferred embodiment, the entire shielded intubation guide 110 may be formed of the same opaque material. On the other hand, it should be understood that if photomask functionality is not required, it will not be necessary to use opaque materials to form the shield 120 or other parts of the intubation guide 110, and in fact, it is desirable to make these components transparent to facilitate visualization of the subject's oral cavity and pharynx during the endotracheal intubation procedure.

[0173] It should be understood that the shielded intubation guide 110 can be used to allow the lens portion 142 of the intubation device 140 to be inserted into the airway of the subject 100 without interfering with the subject's tongue or other anatomical structures that would otherwise hinder the insertion of the lens portion 142 during use. This is particularly advantageous because some embodiments of the shielded intubation guide 110 prevent direct visualization during the insertion of the lens portion 142. However, it should be understood that other embodiments of the shielded intubation guide 110 can be configured to allow intubation under direct visualization. In any case, it should be understood that the shielded intubation guide 110 will typically be used to hold the subject's tongue and typically press the tongue down, for example, by pushing the tongue down. This can depend on the specific shape and construction of the shielded intubation guide 110, including the curvature and flexibility described above.

[0174] The proximal opening 113 of the shielded intubation guide 110 is configured to allow the lens portion 142 to be inserted through the proximal opening 113 into the channel 112 of the intubation guide 110. Preferably, the shielded intubation guide 110 is designed to fit the intubation device 140, and in particular its lens portion 142. The intubation device 140 and the endotracheal tube 150 used in this process do not require any specific modifications for the ventilation-type endotracheal intubation procedure described above. Accordingly, the shielded intubation guide 110 can be configured independently of the intubation device 140 and the endotracheal tube 150, provided that the correct type of intubation device 140 and the corresponding lens portion 142 are selected for the shielded intubation guide 110.

[0175] As described above, some embodiments of the shielded cannula guide may include a seal, such as Figure 6 The example shown. In this example, the shielded intubation guide 610 includes a seal 601 covering the proximal opening 113. The seal 601 can normally be in a closed position for sealing the proximal opening 113, and can be moved to an open position when the lens portion 142 of the intubation device 140 is inserted through the channel 112. The seal 601 can help reduce expulsion from the subject's mouth or airway through the channel 112.

[0176] Turn back Figure 1D It will be understood that when the lens portion 142 of the cannulation device 140 is first inserted into the proximal opening 113, this can cause the seal 601 in the proximal opening 113 to move from the closed position to the open position, thereby allowing the lens portion 142 to pass through the proximal opening 113.

[0177] In a preferred embodiment, the seal 601 is biased toward a closed position so that it returns toward the closed position after the procedure when the lens portion 142 of the intubation device 140 is removed from the channel 112. The seal 601 may be configured to form a partial seal around at least one of the lens portion 142 of the intubation device 140 and the endotracheal tube 150, thereby reducing or preventing discharge that might otherwise bypass the lens portion 142 or the endotracheal tube 150 during use.

[0178] As described above, when the lens portion 142 of the cannulation device 140 is inserted through the proximal opening 113, the seal 601 can be opened from its normally closed position (e.g., Figure 6 (As shown) Moved to the open position. In some embodiments, the seal 601 may include at least one elastic membrane configured to deform in response to the lens portion 142 being abutted against the seal 601, thereby defining an opening for receiving the lens portion 142.

[0179] In one example, seal 601 may include two or more resilient membranes, each supported around a corresponding portion of the periphery of the proximal opening 113, and each including a corresponding unsupported edge 602. The corresponding unsupported edges 602 may at least partially overlap in the closed position and separate in the open position to define the opening. While overlapping edges 602 are preferred for a more effective seal, in some examples the edges 602 may rest against the closed position without overlapping.

[0180] In other examples, seal 601 may include two or more resilient membranes supported around the periphery of proximal opening 113. The corresponding orifice of each resilient membrane may differ in shape, location, or orientation from the orifices of the other resilient membranes. In other words, seal 601 may include multiple fully supported membranes with orifices (such as slits) that are misaligned or overlapping, thereby providing an enhanced sealing effect.

[0181] In another example, the seal 601 may include a single elastic membrane supported around the periphery of the proximal opening 113. This single elastic membrane may include an orifice that is substantially closed in a closed position and extends in an open position to define the opening. For example, in some embodiments, the orifice may be a slit. In other embodiments, the orifice may be a pinhole, or may have any other geometry to allow for the formation of a suitable opening to receive the lens portion 142 of the cannulation device 140. For example, the orifice may be cross-shaped or H-shaped.

[0182] At least one elastic membrane can be formed from any suitable membrane material, although a thin, flexible polymer material will typically be used. Preferably, the membrane will be formed from an opaque material to ensure that light escape is prevented from the shielded cannula guide 110, as described above.

[0183] It will be understood that when the lens portion 142 is received in the proximal opening 113 (e.g., as...), Figure 3A and Figure 3B (As shown), the seal 601 can be in an open configuration, but can still provide an effective seal around the lens portion 142 to substantially prevent light leakage around the lens portion 142 during light-guided intubation procedures, and / or substantially reduce the discharge of fluid, droplets, aerosols, etc., around the lens portion 142 during any endotracheal intubation procedure. This will depend on the design of the seal 601 and also the design of the lens portion 142. For example, if the seal 601 is configured to extend around the lens portion 142 in the open position, this can form a substantially hermetically tight seal even when the lens portion 142 extends through the proximal opening 113.

[0184] It should also be noted that, compared to the previous examples, Figure 6 The example of the shielded cannula guide 610 shown illustrates an alternative configuration of the body 111 and the shield 120. In this case, the proximal opening 113 is located at the end of the long protrusion 116. The shield 120 includes a long lateral flange with lateral edges 223, 224 that will further effectively surround the face of the object, while the upper edge 221 and lower edge 222 are positioned close to the body 111. The portion of the body 111 for insertion into the mouth 102 of the object is also shorter than in the previous example. Therefore, it should be understood that suitable embodiments of the shielded cannula guide 610 may include significant variations in the configuration of the body 111 and the shield 120 while still providing similar functionality as described above.

[0185] It should be understood that embodiments of the shielded intubation guide 110 may allow the lens portion 142 of the intubation device 140 to move relative to the anatomy of the subject as it is inserted through the channel 112, and specifically as the distal end 143 moves into place to allow the endotracheal tube 150 to be advanced through the larynx 104 into the trachea 105 of the subject.

[0186] Turn back Figure 2C and Figure 2D A detailed example of the shielded cannula guide 110 shown illustrates that the elongated body 111 can be defined as a thin-walled body to define the channel 112. The body 111 and the light shield 120 can be formed of rigid, semi-rigid, or flexible materials, such as appropriately medical-grade plastics. As mentioned above, if a light shield is required, it is desirable to use an opaque material to form at least the light shield 120, preferably the entire shielded cannula guide 110.

[0187] As described above, it is desirable to provide a shielded intubation guide 110 configured such that sections along the channel 112 and along the light shield 120 are to be broken to facilitate removal of the shielded intubation guide 110 while the endotracheal tube 150 remains in place.

[0188] exist Figure 4A and Figure 4B as well as Figure 5A and Figure 5B In the example of the shielded cannula guide 410 shown, the body 111 of the shielded cannula guide 410 includes a break line 117 extending longitudinally along the side of the channel 112 and the section of the shield 120, thereby allowing the shielded cannula guide 410 to be broken along the break line 117. In this case, the break line 117 extends along the section of the shield 120 from the channel 112 to the lower edge 222 of the flange forming the shield 120.

[0189] Compared to the wall material forming the body 111 and the shield 120, the break line 117 can be formed by providing a region of significantly thinner material so that this thinner region will be breakable when the opposite sides of the body 111 and the light shield 120 are forcibly pulled apart. The hinge line can be defined on the opposite sides of the channel 112 such that the cannulation guide 110 can be divided into two hinged portions to assist removal while the endotracheal tube 150 is held in place.

[0190] In this configuration, the break line 117 is defined along the central plane of the shielded cannula guide 110. This break line 117 will be aligned with the sagittal plane of the object 100 during use. However, it should be understood that the specific configuration of the break line 117 shown in the illustration is not mandatory, and the shielded cannula guide 110 may include different arrangements to allow it to be broken, thereby facilitating its removal.

[0191] The proximal opening 113 and the channel 112 of the shielded cannula guide 110 will typically have a cross-section selected to resemble the lens portion 142 of the cannula receiving device 140. Therefore, it will be understood that the specific cross-sectional shape will depend on the design of the cannula device 140. The proximal opening 113 and the channel 112 will be adapted to the cross-sectional shape of the lens portion 142, such as... Figure 3B As shown. However, the shape can vary depending on the specific shape of the lens portion 142 at different points along its length.

[0192] Accordingly, the shapes of the proximal opening 113 and the channel 112 can be selected based on the cross-sectional shape of the lens portion 142 of the cannulation device 140. As described above, the shielded cannulation guide 110 can be curved, and if so, the curvature of the shielded cannulation guide 110 can be selected based on the curvature of the lens portion 142 of the cannulation device 140.

[0193] The degree of curvature can also depend on a range of other factors, including the flexibility of the material used to form the body 111 and the airway anatomy of the object. For example, as mentioned above, using a more flexible material can allow a straight or relatively uncurved body 111 to deform and conform to the lens portion 142 and / or the object's airway during use. It should be understood that if the body 111 is formed of a relatively flexible material, the curvature of the body 111 may be less critical. However, it should be noted that the flexibility of the shielded cannula guide 110 will be practically limited to prevent collapse when inserted into the object's mouth.

[0194] Furthermore, using a relatively more flexible material to form the body 111 of the shielded cannula guide 110 allows for the adaptation of lens portions 142 of different sizes and shapes, while using a relatively rigid material may limit the range of lens types, which may result in the need to select different shielded cannula guides 110 for lens portions 142 of different sizes and shapes.

[0195] It should be noted that various shielded cannulation guides 110 of different shapes and sizes are available to accommodate a range of different types, shapes, and sizes of lenses that can be used with cannulation devices to suit patients of different ages, sizes, and anatomy. For example, different shielded cannulation guides 110 are available for pediatric, adult, or obese subjects and will be selected to correspond to the lens chosen for the specific subject.

[0196] However, some of the aforementioned techniques, such as using flexible materials to form the shielded cannula guide 110, can allow the same shielded cannula guide 110 to be used for different lens ranges.

[0197] The dimensions of the proximal opening 113 and the channel 112 can be selected based on the cross-sectional dimensions of the lens portion 142 of the cannulation device 140. In some examples, the proximal opening 113 of the shielded cannulation guide 110 may be intentionally configured such that its size is smaller than the corresponding cross-sectional dimension of the lens portion 142 of the cannulation device 140. Similarly, the channel 112 of the shielded cannulation guide 110 may be intentionally configured such that its size is smaller than the corresponding cross-sectional dimension of the lens portion 142 of the cannulation device 140. In this respect, it should be understood that the shielded cannulation guide 110 can be configured to expand when receiving the lens portion 142. Forming the shielded cannulation guide 110 from an expandable material thus allows the lens portion 142 to be more tightly encapsulated within the shielded cannulation guide 110 during use.

[0198] Another example of the shielded cannula guide 710 is shown in Figures 7A to 7GIt should be understood that this shares many features with the previous example, and the same reference numerals have been used to indicate these common features. However, this example illustrates many optional construction features that will now be described.

[0199] In this example, the shielded cannulation guide 710 may include a removable cap 730 for closing the proximal opening 113 when the lens portion 142 of the cannulation device 140 is not inserted into the channel 112 of the shielded cannulation guide 110.

[0200] In this configuration, the cover 730 is integrated into the shielded cannula guide 710, and the cover 730 is attached to the shield 120 by a fastener 731 extending from a lateral edge 224 of the shield 120. Figure 7A The cap 730 is shown being removed from the proximal opening 113, thereby allowing the lens portion 142 of the cannulation device 140 to be inserted into the open channel 112. On the other hand, Figure 7B The image shows the cover 730 in the closed position for sealing the proximal opening 113. When the cover 730 is in the closed position, it can fit inside the proximal opening 113 or engage with the edge surrounding the proximal opening 113. The cover 730 may include a lug 732, as seen in... Figure 7B This is used to allow the user to remove the cover 730 by grasping and pulling the lug 732.

[0201] Further details of the lid 730 in the closed position can be seen in Figure 7F The cross-sectional view, and with the cover 730 removed, allows for a better observation of the structure of the proximal opening 113, such as... Figure 7G The cross-section is shown in the diagram.

[0202] Typically, the cap 730 is held in place during insertion of the shielded cannula guide 110 into the user's mouth to seal the proximal opening 113, thereby substantially reducing discharge through the proximal opening while the cap is in place. The cap 730 can then be removed before the lens portion 142 of the cannula device 140 is inserted into the channel 112 of the shielded cannula guide 110.

[0203] It should be noted that in this example of the shielded cannula guide 110, the flange of the shield 120 is laterally curved to conform to the shape of the object's face during use, as best seen in Figure 7D And 7E. Further note on these figures is that, compared to the previous examples, this example of the shielded cannula guide 110 has a significantly reduced protrusion 116.

[0204] Turn back Figure 7CAs will be seen, the body 111 of the shielded cannula guide 710 is curved, as discussed in the example above. In this case, the wall of the body 111 includes corresponding expandable regions 701 extending at least partially longitudinally along the channel 112 from the distal opening 114. These expandable regions 701 allow the body 111 to expand circumferentially during use. These expandable regions 701 can be provided by forming a flute in the wall of the body 111, such as... Figure 7C As shown, they are normally in a collapsed state, but when inserted through channel 112 and distal opening 114, they are able to expand to accommodate the lens portion 142 of the cannulation device 140. Further details of these expandable regions can be seen in... Figure 7F and Figure 7G Cross-sectional view.

[0205] Two other examples of shielded cannula guides 810 and 910 are shown respectively. Figure 8 as well as Figure 9 These are substantially the same as the previously described shielded cannula guide 710, but provide different examples of a feasible construction of an expandable region 701 extending at least partially longitudinally along the channel 112 from the distal opening 114.

[0206] exist Figure 8 In the first example shown, an expandable region 701 is provided in each side wall of the body 111, but unlike the previous example, no expandable regions 701 are provided in the upper and lower walls of the body 111.

[0207] exist Figure 9 In the second example shown, two inflatable regions 701 are provided in each side wall of the body 111. Providing more than one recess allows for enhanced expansion capacity and ensures that the body 111 generally has a flatter profile, which facilitates insertion of the shielded cannula guide 910 while still allowing insertion of the lens portion 142 of the cannula device 140. This helps reduce damage to the endotracheal tube's cuff during the procedure.

[0208] During endotracheal intubation, it is generally desirable to avoid pushing the tongue back; therefore, ideally, the tongue should be kept in a position that does not move too far. Figure 9 In the example of the shielded intubation guide 910, the substantially flat construction of the distal end of the body 111, formed by using multiple expandable regions 701, allows this portion of the shielded intubation guide 910 to pass more easily through the tongue and palate without pushing the tongue back or contacting the pharynx, thereby avoiding inducing a vomiting response in the subject.

[0209] It should be understood that although the expandable region 701 discussed above has been shown in the form of a groove in the wall of the body 111, this is merely an example of a suitable construction technique for providing an expandable region to allow the body to expand circumferentially, and many other techniques will be available to those skilled in the art. For example, a suitable expandable region may be formed using a relatively more flexible material compared to the rest of the body 111, or circumferential expansion of the body 111 may be facilitated by providing overlapping wall surfaces that can slide relatively.

[0210] Another example of the shielded cannula guide 1010 is shown in Figure 10 In this case, a separate, removable cap-seal portion 1030 is provided instead of the previously shown one-piece cap 730. The cap-seal portion 1030 in this example also has a slightly different design compared to the previous one-piece cap 730, in particular, the cap-seal portion 1030 engages with the protrusion 116, wherein a proximal opening 113 is defined in the protrusion 116, and has a removal lug 1031 extending to one side of the cap-seal portion 1030 to allow removal by peeling rather than pulling.

[0211] Furthermore, in this example, the cap-seal portion 1030 includes an integral seal 1032 for covering the proximal opening 113. The seal 1032 is normally in a closed position for sealing the proximal opening 113, and can be moved to an open position when the lens portion 142 of the cannulation device 140 is inserted through the proximal opening 113, thereby allowing for... Figure 6 The seal 601 of the previously described embodiment of the shielded cannula guide 600 functions in a similar manner. The cap-seal portion 1030 may include a sealing membrane having one or more slits 1033 or other holes formed therein, thereby allowing the lens portion 142 to be inserted.

[0212] As described above for seal 601, the cap-seal portion 1030 is designed to allow for improved protection against fluids, aerosols, or droplets by partially sealing the proximal opening 113 around any inserted object, even when the laryngoscope blade and endotracheal tube are positioned inside the proximal opening 113. If the laryngoscope blade and endotracheal tube are removed, the sealing membrane will return to its original closed position, thus restoring a complete seal.

[0213] It should be understood that by providing the seal 1032 in the separate cap-seal portion 1030, this allows the cap-seal portion 1030 to be formed of a suitable elastic material, such as silicone or rubber, while the shielded cannula guide 1010 can be formed of entirely different materials. This can greatly simplify the manufacture of the shielded cannula guide 1010.

[0214] It should also be understood that the use of a removable cap would be particularly desirable for non-video or direct-view laryngoscopes, allowing the user unobstructed visual access to the proximal opening 113 and through the channel 112.

[0215] Another example of the shielded cannula guide 1110 is shown. Figures 11A to 11C The shielded cannula guide 1110 includes a separate, removable cap-seal portion 1030, such as... Figure 10 The previous example of the shielded cannula guide 1010 is shown, but in this case, the shielded cannula guide 1110 also includes several additional optional features incorporated into the shield 120 and the body 111.

[0216] In this example, the shielded intubation guide 1110 includes different types of additional openings through the shield 120, independent of the main channel 112, for facilitating access to the patient's oral cavity for various purposes. In this particular example, the shielded intubation guide 1110 includes a pair of suction ports 1140 disposed on each side of the distal opening 114 and a pair of discharge conduits 1150.

[0217] The suction port 1140 can be configured to facilitate the aspiration of fluids such as saliva, blood, or vomit before or during intubation. Each suction port 1140 provides an opening through the shield 120 through which an suction tube or other suitable suction device can be inserted to allow fluid to be aspirated from the subject's oral cavity. In this example, the opening of each suction port 1140 is defined at an angle relative to the shield 120 such that the suction tube or suction device, upon insertion through the suction port 1140, will face the body 111. As a result, the suction tube or suction device, upon insertion through the suction port 1140, can face the subject's pharynx along the sidewall of the body, which can assist in the proper positioning of the end of the suction tube / device during use.

[0218] In this example, the suction port 1140 may also include a port seal 1141 for closing the suction port orifice. The port seal 1141 will preferably function in a manner similar to seals 601, 1032 as described above in previous examples, but will be configured to allow insertion of a suction tube / device (different from the lens portion 142 of the cannulation device 140) during use. Thus, it should be understood that each port seal 1141 may be configured such that the port seal 1141 is normally in a closed position for sealing the suction port 1140, and can be moved to an open position when the suction tube / device is inserted through the suction port 1140. Preferably, the port seal 1141 may be configured to form a partial seal around the suction tube / device during use. It should be understood that the port seal 1141 may help reduce expulsion from the mouth of the subject, which would otherwise escape from the suction port 1140.

[0219] Figures 11A to 11C An embodiment of the shielded cannulation guide 1110 shown additionally includes a discharge conduit 1150 disposed on either side of the proximal opening 113 (which in this example is covered by a cap-seal portion 1030). The discharge conduit is configured to allow the discharge of fluids, including air containing suspended droplets or aerosols from the patient's oral cavity.

[0220] like Figure 11A As can be seen from the front view of the shielded cannulation guide 1110, each discharge catheter 1150 extends along the shield 120 from a corresponding catheter opening passing through the adjacent proximal opening 113 of the shield 120 (which in this example is covered by the cap-seal portion 1030) to a proximal catheter opening 1151 near the lateral edges 223, 224 of the shield 120. (Turn) Figure 11B and Figure 11C The rear view of the shielded intubation guide 1110 shows that each discharge catheter 1150 includes a catheter body 1152 that extends partially along the body 111 in a parallel arrangement and provides a distal catheter opening 1153 that is positioned inside the patient's oral cavity when the body 111 of the shielded intubation guide 1110 is inserted into the patient's mouth.

[0221] It will be understood that when the subject is lying on a bed, operating table, etc., the proximal catheter opening 1151 of the discharge catheter 1150 will face downwards toward the two lateral edges of the shield 120, and inside the subject's mouth, the distal catheter opening 1153 will face toward the pharynx on the corresponding lateral side of the body 111 and its internal passage 112. A tube or line may be connected to the proximal catheter opening 1151 of the discharge catheter 1150, with the other end connected to an inhalation source or other form of airflow, equipped with a virus / bacterial filter for capturing any microorganisms, thereby allowing discharge through the discharge catheter 1150 without exposing the user to any fluids, droplets, or aerosols. The diameter of the proximal catheter opening 1151 should be the standard diameter for connection to a standard tubing. However, if no suction tube or airflow is added for aspiration, the aerosol (if any) will still flow toward the floor (not toward the user). When the proximal catheter opening 1151 is not used for discharge, a corresponding catheter cap (not shown) can be used to close the proximal catheter opening 1151 to prevent discharge from escaping through the discharge catheter.

[0222] In this example, the shield 120 includes an edge 1160 configured to engage the subject's face to form a seal around the subject's mouth. In this example, the edge 1160 extends around the periphery of the shield 120, but this is not mandatory; in some examples, the edge may be positioned inside the edge of the shield 120. The edge 1160 may be provided with foam or an expandable bushing, as in a typical ventilation mask, to provide an enhanced seal. It should be understood that the edge 1160 can further reduce exudate from the subject's mouth before and during endotracheal intubation procedures.

[0223] In this particular embodiment, the body 111 includes a thickened region 1170 surrounding the body 111 near the shield. This thickened region 1170 helps protect the subject's teeth from the lens portion 142 during insertion of the cannulation device 140, and also helps protect the body 111 from damage if the subject bites down. The body 111 may additionally include toothed projections 1181, 1182 projecting outwards from the body 111 and offset from the shield 120. The toothed projections 1181, 1182 are configured to engage the inner surfaces of the subject's teeth in use, thereby helping to secure the shielded cannulation guide 1110 inside the mouth after the body 111 has been inserted.

[0224] Figure 12 and Figure 13 Further examples of embodiments of the shielded cannulation guide are shown, illustrating some potential variations in the design of the body 111, as discussed below.

[0225] Figure 12 An example of a shielded intubation guide 1210 is shown, which has a relatively short body construction compared to previous examples. In this case, the length of the body 111 is chosen such that when the shielded intubation guide 1210 is inserted into the subject's mouth, the distal opening 114 will be positioned in the subject's oral cavity, specifically between the subject's tongue and palate. This short body construction helps to avoid any coughing or vomiting response before endotracheal intubation, especially when performing endotracheal intubation on an awake subject.

[0226] Figure 13 Another example of a shielded cannula guide 1310 is shown, which has a longitudinally expandable body 111. In this example, the body includes a longitudinally expandable region 1301 that extends circumferentially around the body 111 and allows the body 111 to expand longitudinally during use. The shielded cannula guide 1310 may be provided with the longitudinally expandable region 1301, which is typically in a collapsed state so that the body 111 is initially inserted into the mouth of the object with a relatively short configuration.

[0227] When the shielded cannula guide 1310 is inserted into the subject's mouth, the distal opening 114 can be located in the subject's oral cavity, specifically between the subject's tongue and palate. Then, when the lens portion 142 of the cannula device 140 is introduced into the channel 112, the longitudinally expandable region 1301 will expand, thereby causing the body 111 to expand longitudinally.

[0228] It should be understood that this will result in an effective lengthening of the body 111, allowing the distal opening 114 to be moved within the pharynx to a deeper location in the subject's airway, such as beyond the subject's tongue and palate. The specific positioning of the distal opening 114 in use will, of course, depend on the construction of the shielded intubation guide 1310 and the specific body 111 and longitudinally expandable region 1301. In any case, the extended length of the body 111 will assist in guiding the endotracheal tube during the endotracheal intubation procedure.

[0229] If it can be seen Figure 13 The longitudinally expandable region 1301 can be structurally similar to an accordion and is preferably formed of a relatively flexible material and / or has a relatively reduced thickness to facilitate expansion. However, it should be understood that alternative construction techniques can be used to provide the longitudinally expandable region 1301. For example, a telescopic body portion can be used to provide a suitable longitudinally expandable region 1301.

[0230] In any case, the ability of the longitudinally expanding body 111 will allow the shielded intubation guide 1310 to be used continuously between conscious and paralyzed subjects. It should be noted that the use of a shielded intubation guide with a relatively long fixed body length in non-paralyzed subjects may induce coughing or vomiting responses.

[0231] In this example, inserting the lens portion 142 into the channel 112 will cause the longitudinally expandable region 1301 to expand because the construction of another circumferentially expandable region 701 near the distal opening 114 will form a relatively tight fit around the lens portion 142. This will cause the lens portion 142 to exert pressure on the distal end of the body 111, thereby causing the normally collapsed longitudinally expandable region 1301 to expand. It should be understood that this will require the corresponding expandable regions 701, 1301 to be configured such that the longitudinally expandable region 1301 expands before the circumferentially expandable region 701 expands, in order to allow the lens portion 142 to pass through the distal opening 114. It should be understood that the expansion can alternatively be caused by an externally activated expansion mechanism or the like.

[0232] Figure 14A and Figure 14B This is a cross-sectional view illustrating the steps of manually advancing an intratracheal tube using a first example of a conventional laryngoscope with a shielded intubation guide 110. It should be understood that... Figure 14A and Figure 14BThe steps shown effectively replace the reference. Figures 1A to 1H The method described in Figure 1E and Figure 1F The steps are shown, but a conventional laryngoscope is used as the intubation device 140 instead of the previously shown one-handed type of intubation device. It should be understood that the conventional laryngoscope in this example can be a direct observation laryngoscope or a video laryngoscope.

[0233] Assuming the lens portion 142 of the cannulation device 140 has been inserted into the channel 112 of the shielded cannulation guide 110, typically as follows: Figure 1D In that case, and as previously discussed, the light source can be activated during insertion. However, regarding Figure 14A In this case, the endotracheal tube 150 is configured independently of the intubation device 140. (Transfer to...) Figure 14B The endotracheal tube 150 is manually advanced along the lens portion 142 of the intubation device 140 and through the channel 112 to introduce the end 151 of the endotracheal tube 150 into the subject's trachea 105. The remaining methods can then continue, typically as per reference. Figures 1G to 1H As described above.

[0234] It should be understood that when a conventional laryngoscope is used in this manner as an intubation device 140, the user will typically hold the handle 141 of the intubation device 140 with one hand and manually advance the endotracheal tube 150 with the other hand.

[0235] In any case, it should be recognized that the different embodiments of the shielded intubation guide described above can allow endotracheal intubation to be performed while substantially reducing discharge from the mouth throughout the process.

[0236] Unless the context otherwise requires, the word “comprising” and variations such as “comprising” or “having” in the specification and appended claims shall be understood to include the specified integers or groups of integers or steps, and not to exclude any other integers or groups of integers. As used herein, unless otherwise stated, the term “about” means ±20%.

[0237] It should be noted that the singular forms “a,” “an,” and “the” used in the specification and appended claims include plural references unless the context clearly specifies otherwise. Thus, for example, the reference to “stent” includes multiple stents. Many terms will be used in this specification and appended claims, and these terms should be defined as having the following meanings unless clearly intended to the contrary.

[0238] Of course, it should be recognized that although the above is given by way of example of the invention, all such and other modifications and alterations that are obvious to those skilled in the art are considered to fall within the broad scope and spirit of the invention described herein.

Claims

1. A shielded intubation guide for use during endotracheal intubation, the shielded intubation guide comprising: a) An elongated body defining a channel extending between a proximal opening and a distal opening, the channel being configured to receive a laryngoscope blade portion of an intubation device, wherein the shielded intubation guide is configured for insertion into the mouth of a subject such that the proximal opening is positioned close to the mouth of the subject and the distal opening is positioned within the airway of the subject, and wherein the shielded intubation guide is configured in use to: i) hold the subject's tongue; and ii) depress the tongue; and b) A shield around the proximal opening, wherein the shield is configured to cover the mouth of the object during use, thereby reducing discharge from the mouth of the object. The shielded intubation guide is configured to allow the use of an intubation device and the shielded intubation guide to perform endotracheal intubation on the subject by: i) Insert the lens portion of the cannulation device into the channel of the shielded cannulation guide; ii) Positioning the distal end of the lens portion of the intubation device close to the throat of the patient; and iii) Advance the endotracheal tube along the lens portion of the intubation device through the channel into the trachea of ​​the subject.

2. The shielded cannula guide of claim 1, wherein the shield is configured to reduce one or more of the following discharges from the mouth of the subject: a) Fluid; b) Droplets; c) Aerosol; and d) Light emitted from the distal end of the lens portion of the intubation device during a light-guided endotracheal intubation procedure.

3. The shielded cannula guide of claim 2, wherein the shield includes a flange extending outwardly from the body, the flange being configured to cover the mouth portion of the object in use.

4. The shielded cannula guide according to claim 3, wherein the flange surrounds the proximal opening.

5. The shielded cannula guide according to claim 3 or 4, wherein the flange includes opposing lateral flange portions curved toward the distal opening.

6. The shielded cannula guide according to claim 3 or 4, wherein the flange includes an upper edge having a recess for aligning the nose of the object in use.

7. The shielded cannula guide according to claim 3 or 4, wherein the flange is configured to prevent over-insertion of the shielded cannula guide by abutting against the mouth of the object, thereby ensuring that the proximal opening remains positioned outside the mouth.

8. The shielded cannula guide according to claim 3 or 4, wherein the proximal opening is at least one of the following: a) Offset proximally from the flange; and b) Oriented at an angle relative to the flange.

9. The shielded cannula guide according to any one of claims 1 to 4, wherein the shielded cannula guide is configured to be broken along the channel and along a section of the shield.

10. The shielded cannula guide of claim 9, wherein the body of the shielded cannula guide includes a break line extending along the side of the channel and longitudinally along the segment of the shield, thereby allowing the shielded cannula guide to break along the break line.

11. The shielded cannula guide of claim 10, wherein the break line is defined along the central plane of the shielded cannula guide.

12. The shielded cannula guide according to any one of claims 1 to 4, wherein the shielded cannula guide includes a cutting mark and is configured to be cut along the channel and along a segment of the shield by following the cutting mark.

13. The shielded cannulation guide according to any one of claims 1 to 4, wherein the shape of the proximal opening is selected based on the cross-sectional shape of the lens portion of the cannulation device.

14. The shielded cannulation guide of claim 13, wherein the size of the proximal opening is selected based on the cross-sectional size of the lens portion of the cannulation device.

15. The shielded cannulation guide according to any one of claims 1 to 4, wherein the shape of the channel is selected based on the cross-sectional shape of the lens portion of the cannulation device.

16. The shielded cannulation guide of claim 15, wherein the size of the channel is selected based on the cross-sectional size of the lens portion of the cannulation device.

17. The shielded cannula guide according to any one of claims 1 to 4, wherein the shielded cannula guide is formed of a flexible material.

18. The shielded cannula guide of claim 17, wherein the shielded cannula guide is configured to expand when receiving the lens portion.

19. The shielded cannula guide of claim 18, wherein at least one wall of the body includes an expandable region.

20. The shielded cannula guide of claim 19, wherein the expandable region is at least one of the following: a) extending at least partially longitudinally along the channel from the distal opening and allowing circumferential expansion of the body; and b) Extending circumferentially around the body and allowing the body to expand longitudinally.

21. The shielded cannula guide according to any one of claims 1 to 4, wherein the body is curved.

22. The shielded cannulation guide of claim 21, wherein the curvature of the body is selected based on the curvature of the lens portion of the cannulation device.

23. The shielded cannulation guide according to any one of claims 1 to 4, wherein the shielded cannulation guide includes a seal covering the proximal opening, the seal being normally in a closed position for sealing the proximal opening, and movable to an open position when the lens portion of the cannulation device is inserted through the channel.

24. The shielded cannulation guide of claim 23, wherein the seal is biased toward the closed position so that when the lens portion of the cannulation device is removed from the channel, the seal returns toward the closed position.

25. The shielded intubation guide of claim 24, wherein the seal is configured to form a partial seal around at least one of the lens portion of the intubation device and the endotracheal conduit during use.

26. The shielded intubation guide according to any one of claims 1 to 4, wherein the shielded intubation guide includes a removable cap for closing the proximal opening when the lens portion of the intubation device is not inserted into the channel of the shielded intubation guide.

27. The shielded cannulation guide of claim 26, wherein the cap includes a seal for covering the proximal opening, the seal being normally in a closed position for sealing the proximal opening and movable to an open position when the lens portion of the cannulation device is inserted through the channel.

28. The shielded intubation guide according to any one of claims 1 to 4, wherein the shielded intubation guide is configured to allow ventilation of the subject using a ventilation mask and a ventilator prior to endotracheal intubation.

29. The shielded intubation guide according to any one of claims 1 to 4, wherein the shielded intubation guide is configured for use in a light-guided endotracheal intubation procedure, wherein after the lens portion of the intubation device is inserted into the channel of the shielded intubation guide, light is emitted from a light source near the distal end of the lens portion of the intubation device, wherein the shield is configured to prevent light emitted from the light source from escaping from the mouth of the subject.

30. The shielded cannula guide according to claim 29, wherein at least one of the following: a) The shielding element is formed of an opaque material; and b) The entire shielded cannula guide is made of an opaque material.

31. The shielded cannula guide according to any one of claims 1 to 4, wherein the shielded cannula guide is formed of a transparent material.

32. The shielded cannula guide according to any one of claims 1 to 4, wherein the shield includes an edge configured to engage the face of the object to form a seal around the mouth of the object.

33. The shielded cannula guide according to any one of claims 1 to 4, wherein the length of the body is selected such that the distal opening is positioned as one of the following: a) Near the mouth of the object; b) The pharynx near the object; and c) Between the object's tongue and palate.

34. The shielded intubation guide according to any one of claims 1 to 4, wherein the shielded intubation guide includes at least one additional opening extending through the shield to facilitate access to the oral cavity of the subject.

35. The shielded intubation guide of claim 34, wherein the shielded intubation guide includes at least one suction port extending through the shield.

36. The shielded cannulation guide of claim 34, wherein the shielded cannulation guide includes at least one discharge conduit extending through the shield.

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